A:May, is this the Hall of Ancient China?
梅,这是古代中国馆吗?
B:Yes. Look at these historical relics here, amazing!
是啊。看这些文物,真令人惊叹!
A:Why are they all in glass boxes?
为什么它们都被装在玻璃盒里呢?
B:For protection. Some relics will turn to dust if exposed to air.
为了保护它们啊。—些文物暴露在空气中就会变成粉末。
A:So there isn't air in the glass boxes?
那玻璃盒中就没有空气了?
B:No, there isn't. There is a vacuum in every box.
没有。它们都是真空的。
A:I wonder how old these things are. Thousands of years?
真不知这些东西有多古老,几千年?
B:Yeah, they all come from a very ancient time.
是啊,它们都是来自古代。
A:Hey, look at the tripod. I've seen it on TV.
嘿,看这个鼎。我在电视上看到过。
B:It was made 4,000 years ago. It's priceless!
4000年前的青铜鼎。这可是无价之宝!